No problem, we've got 8559 and 2455 to multiply
8559 × 2455 = 2455 × (8559)
+ 2455 × 9 what gives us 22095
+ 2455 × 50 which equals 122750
+ 2455 × 500 giving us 1227500
+ 2455 × 8000 that equals 19640000

= 21012345
